Improved device foe oomeeting motion



J. HAWTHORN.

DEVICE FOR CONVERTING MOTION.

Patented Feb. 5, 1867.

IIIA.

ncrmm'ua, wAsumm'on o c gotten gram; gaunt @ffint.

HIPBDVLD DEVICE FOR CONVERTING MOTION.

{like 5tljth1llt tefzmh to in these idiots new art uniting part st 11;: m.

TO ALL WHOM IT MAY CONCERN:

Be it known thatI, JAB AD HAWTHORN; of Cosliocton, in the county of Coshocton, and State of Ohio, have invented a new and improved Device forv Converting Motion; and I do hereby declare that the following is a full and exact description thereof, reference'heing had to the accompanying drawings,'and to the letters of reference marked thereon.

My invention consists 'of a-pair of rocks, adapted to receive a reciprocating rectilinear movement from a steam piston or other motor, and'guided in a suitable frame, which is oscillated, to cause the racks to engage alternately with the opposite sides "of a pinion, so as to impart a continuous rotary motion to the latter, and to the shaft to which it is att 'ached.f In the dra'wings Figure 1 represents a topview of my invention.

Figure 2 is a side'elevation of the same.

Figure 3 is a transverse section thereof, at x 1, fig. 1.

Figure 4 is a'transverse section of the reversing device, at 3 y, fig. Q.

Fig'nr'efi is a perspective view of. the latter.

Figure 6 is alperspective view of one ofthe slotted ends of the rack-frame hereinafter described.

Similar letters of reference indicate corresponding parts in the several views. 7

A A represent a pair of toothed racks, connected at the ends by bars B B, formed with slots [2 b, which engage,at the end of each stroke, with spiral or oblique tappets"or-projections C G', upon' standardsF F, rising front thestatio'nary frame D,'so as to impart aw oscillation is theyoke E, in which the rack-frame slides, as will be hereinafter described. (ERG represent guides, by which the rack'frame is confined to a rectilinear path in the yoke E. H represents a pinion, mounted on a shaft, I, and communicating a continuous rotary motion thereto, as will be presently explained. The oscillating yokeEmay be mounted by pivots on the standards F F, or on any other suitable bearings.

Operation.

It will appear from th e illustration, in fig. 3, that but one of the racks A A engages with the pinion H at any one time.- Supposing the 'rack-frameto be in the position shown in figs. 1 and 3, and moving in the direction indicated by the arrow marked 1 in fig; I, the rack A, engaging with the'pinion H, will rotate it in the direction of the arrow marked thereon. I At the instant the rack-frame reaches the endof its stroke, indicated by dotted red lines in and in full black lines in fig. 2, the slotted bar B, engaging with the tappet 1C, throws the frame and yoke into the reverse position represented by dotted lines in fig. 3, placing the racksA out of gear with the pinion H, and causing the rack A to engage therewith on the opposite side, so that the return stroke of the rack-frame, in the directiouindicated by arrow 2 in fig. 1, will continue to rotatethe pinion H and its shaft I in the same direction. 4 As the rackframe again reaches the end indicated by full lines in fig. 1, the tappet C restores the oscillating yoke and rack-frame to the position shown in fig. 3, and the work proceeds as before. By this invention, the piston, at all parts of its stroke, exerts an equal bearing'npon the rotary shaft, so that the motion of the latter will be as constant and uniform as that of the pi'ston itself. The oscillating yoke or frame E is retained in itsrespeetive positions, by-turns,'-byspring-catches projecting. upon each side'of the stationary frame near its longitudinal centre. The said catches take over the sides of the oscillating frame, so as to hold down whichever side is depressed, and may be automatically retracted. by suitable projections from the rack-frame as the latter approaches each end of its stroke, so as .to' release the oscillating frame andpermit the reversal otlits-po'sition.

I Having thus described my invention, the following is what I claim as new therein, and desire to secure by Letters Patent:

I claim the reciprocating rack-frame A A, B B, guided in an oscillating yoke, E, and engaging alternately with opposite sides of a-pinion, H, so as to impart continuous rotation thereto, substantially as described;

I further claim the tappets C C, to reversethe position of therack-frame, as described.

' IARAD: HAWTHORN.

Witnesses;

Jenn M. Fnmnr, W. R. W'sLcn. 

